KAWASAKI 13031-1313 Wiseco Crankshaft Crank Shaft

( Manufacturer Part Number: 13031-1313 ), ( Part Type: Crankshaft Crank Shaft ), ( Vintage Part: Yes ), ( Country Of Origin: Japan )

Review KAWASAKI Wiseco Crankshaft Crank Shaft fits KX80 1991–1997

The **Kawasaki 13031-1313 KX80 Wiseco Crankshaft** is a precision-engineered, high-performance replacement part designed specifically for Kawasaki s iconic 80cc dirt bike models produced between **1991 and 1997**, including the legendary **KX80**. Crafted from **high-grade 4140 chromoly steel**, this crankshaft is forged to exacting standards, ensuring superior strength, durability, and resistance to fatigue critical factors for riders pushing their bikes to the limits on rough terrain. Unlike stock crankshafts, which may be prone to bending or breaking under heavy stress, the Wiseco version features **optimized counterweights and balanced geometry**, reducing vibration and improving overall engine smoothness. The **polished rod and main journal surfaces** enhance lubrication efficiency, while the **precision-machined crankpins** ensure smooth bearing engagement, reducing wear on the connecting rods and bearings. This crankshaft is a direct drop-in replacement, compatible with the stock engine setup, making it an ideal upgrade for riders seeking to boost reliability, performance, and longevity without sacrificing the classic feel of the KX80. Whether used in competition, trail riding, or restoration projects, the Wiseco crankshaft delivers the robustness and precision needed to handle the demands of modern riding while maintaining the timeless performance of Kawasaki s legendary 80cc engine.

### **Pros and Cons of buying a Kawasaki 13031-1313 (Wisco Crankshaft for KX80, 1991-1997 Models)**

1. **Performance Improvement** A Wisco crankshaft is designed to be stronger and more durable than the stock OEM crank, which can enhance engine reliability and power output, especially under heavy loads or aggressive riding conditions.

2. **Durability** Wisco cranks are known for their high-quality forged construction, reducing the risk of catastrophic failure (such as a bent crank) compared to stock components, which are more prone to wear over time.

3. **Compatibility** This specific part is designed for the 1991-1997 Kawasaki KX80, ensuring a direct fit without modification, which simplifies installation.

4. **Cost-Effective Upgrade** While not extremely cheap, it is often more affordable than a full engine rebuild or replacement, making it a practical choice for restoring or upgrading an aging KX80.

5. **Aftermarket Support** Wisco is a reputable brand in the ATV and motorcycle performance market, meaning you can find additional parts, guides, and support if needed.

6. **Potential for Increased Longevity** If the original crank was worn or damaged, replacing it with a Wisco unit can extend the life of the engine, delaying costly repairs.

1. **Installation Complexity** Replacing a crankshaft requires disassembling the engine, which is a labor-intensive process. If you lack mechanical experience, you may need to pay for professional installation, adding to the cost.

2. **Cost** While reasonable for a performance part, the price (typically $100 $150) is still a significant investment for a used or older bike that may not see heavy use.

3. **Potential for Other Hidden Issues** If the engine has other worn components (pistons, bearings, seals), replacing just the crank may not fully resolve performance problems. A full engine inspection is recommended before installation.

4. **Limited Power Gain** The KX80 is a small, low-power bike, and a crank upgrade alone won t dramatically increase performance. Other modifications (exhaust, carburetion, clutch) may yield better results.

5. **Availability of Alternatives** Some aftermarket brands offer cheaper or more customized crankshaft options, though Wisco is a trusted name. Researching other brands (like JE or OEM replacements) may reveal better deals.

6. **Warranty Considerations** Kawasaki may void the bike s warranty if aftermarket parts are installed, so be aware of this if the bike is still under warranty.

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### **Conclusion**

The Wisco crankshaft for the 1991-1997 Kawasaki KX80 is a solid upgrade for riders looking to improve engine reliability and durability. It is particularly beneficial if the original crank was damaged or worn, as it can prevent costly failures. However, the decision to purchase it depends on your budget, mechanical skill level, and the overall condition of the bike.

If you plan to keep the bike long-term and ride it aggressively, the investment is justified. If the bike is used sporadically or you re unsure about other engine components, a full engine rebuild or inspection may be more cost-effective in the long run.

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### **Recommendation**

- You suspect the original crank is worn or damaged.

- You re comfortable with basic engine disassembly or have access to a mechanic.

- You want to extend the life of your KX80 without a full engine replacement.

- You re combining this with other upgrades (e.g., clutch, bearings) for a more comprehensive rebuild.

- The bike is heavily abused or has other major engine issues (e.g., bent rods, seized pistons).

- You re on a tight budget and the bike isn t worth significant investment.

- You lack mechanical experience and aren t willing to pay for professional installation.

**Final Verdict:** For a well-maintained KX80 that sees regular use, the Wisco crankshaft is a worthwhile upgrade. Pair it with a thorough engine inspection to ensure no other components are failing. If the bike is past its prime, weigh the cost against potential resale value before proceeding.

Details:

Donor Bike: 1993 Kawasaki KX80. The item is in good usable condition. Removed from a great running bike. Fitment for other bike years and model's not stated; please compare the provided part numbers with your specific year/ model.

Part: wiseco crank shaft. Before purchase: Please verify fitment with a reputable source. Normal wear as shown. The crankshaft moves through freely, no vertical play in the connecting rod.

This item was removed from a 1993 Kx80.

part #: 130311313 prices

• $165.00-$278.30

specifications cyclevintagee:

• for models: Kx80
• for makes: Kawasaki
• for years: 1991-1997
• mpn: 13031-1313
• part type: Crankshaft Crank Shaft
• vintage part: Yes
• country of origin: Japan

seller cyclevintagee:

• city: Chepachet, Rhode Island
• rating: 99.5%
• # reviews: 1117

offer cyclevintagee:

• sold: 0
• quantity: 1
• availability: In Stock
• started: February 22, 2026
• options: Ship-to-home

shipping cyclevintagee:

• type: Fixed
• service: USPS Priority Mail
• class: Expedited
• transit: 4-8 Days
• cost: $0.00
• carrier: USPS

payments cyclevintagee:

• wallet: Apple-pay
• credit card: Visa
• other

general cyclevintagee:

• Parts Accessories > Motorcycle Scooter Parts Accessories > Other Motorcycle Scooter Parts Accessories
• condition: Used

returns cyclevintagee:

• time: 30 Days
• policy: Returns Accepted
• paid by: Buyer

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